@article {2046,
	title = {Density functional theory calculation of 2p spectra of SiH4, PH3, H2S, HCl, and Ar},
	journal = {International Journal of Quantum Chemistry},
	volume = {108},
	number = {8},
	year = {2008},
	note = {ISI Document Delivery No.: 297FSTimes Cited: 0Cited Reference Count: 48Chong, Delano P. Segala, Maximiliano Takahata, Yuji Baerends, E. J.},
	month = {Jul},
	pages = {1358-1368},
	type = {Article},
	abstract = {The method developed recently for prediction of Is electron spectra is now extended to the 2p spectra of SiH4, PH3, H2S, HCl, and Ar. The method for X-ray absorption spectra involves the use of Delta E for the excitation and ionization energies, and application of time-dependent density functional theory using the exchange-correlation potential known as statistical average of orbital potentials for the intensities. Additional assumptions and approximations are also made. The best exchange-correlation functional E-xc for the earlier calculation of Delta E in Is spectra of C to Ne (namely Perdew-Wang 1986 exchange, combined with Perdew-Wang 1991 correlation) is no longer used in this work on 2p spectra of Si to Ar. Instead, recently tested Exc good for 2p core-electron binding energies (known as OPTX) for exchange and LYP for correlation, plus scalar zeroth-order regular approximation is adopted here for the Delta E calculations. Our calculated X-ray absorption spectra are generally in good agreement with experiment. Although the predictions for the higher excitations suffer from basis set difficulties, our procedure should be helpful in the interpretation of absorption spectra of 2p electrons of Si to Ar. In addition, we report calculated results for other kinds of electron spectra for SiH4, PH3, H2S, HCl, and Ar, including valence electron ionizations and excitations as well as X-ray emission. (C) 2008 Wiley Periodicals, Inc.},
	keywords = {2p spectra, ACCURATE, CORE, DFT, ELECTRON BINDING-ENERGIES, EXCHANGE-CORRELATION POTENTIALS, EXCITATION-ENERGIES, excitations, EXCITED-STATES, GAS, INNER, ionizations, MOLECULES, PHOTOELECTRON-SPECTRA, X-ray absorption spectra, X-ray emission spectra},
	isbn = {0020-7608},
	url = {<Go to ISI>://000255603100007},
	author = {Chong, D. P. and Segala, M. and Takahata, Y. and Baerends, E. J.}
}
@article {949,
	title = {Electron binding energies of Si 2p and S 2p for Si- and S-containing substances by DFT calculations using the model molecules},
	journal = {Polymer Journal},
	volume = {36},
	number = {8},
	year = {2004},
	note = {ISI Document Delivery No.: 860UCTimes Cited: 2Cited Reference Count: 39},
	pages = {600-606},
	type = {Article},
	abstract = {Si 2p and S 2p core-electron binding energies (CEBE)s of Si- and S-containing molecules were calculated by deMon DFT program using Slater{\textquoteright}s transition-state (TS) concept. In the previous works, we could not obtain the calculated values to the experimental ones of third periodic 2p CEBEs for the molecules within the range of averaged absolute deviation (AAD) of 1.0eV, although the values were calculated by the unrestricted generalized transition-state (uGTS) method. Here, we were able to get the reasonable Si 2p and S 2p CEBEs of 11, and 12 gas molecules in the AAD of 0.37 and 0.46 eV, respectively from the CEBE calculations by the unrestricted generalized diffuse ionization (uGDI) method with a modification of screening constants for third periodic elements of the 2p core-hole. Furthermore, we estimated WD (work function and the other energies) values of seven Si- and S-containing polymers [(Si(CH3)(2))(n) (PDMS), (Si(CH3)(2)O)(n), (PDMSO), (Si(C6H5)CH3)(n) (PMPS), (Si(C6H5)CH3O)(n) (PPMSO), ((CH2CH2)S)(n) (PETHS), ((CH2(CH2)(4)CH2)SO2). (PHMS), ((C6H4)S)(n) (PPS)] from the differences between calculated CEBE values for the model molecules and experimental ones on the solid polymers.},
	keywords = {APPROXIMATION, CALCULATIONS, CORE, core-electron binding energy, DENSITY-FUNCTIONAL THEORY, DFT, EMISSION-SPECTRA, ESCA, FILMS, FLUORESCENCE, ION IRRADIATION, POLYMER CONVERSION, X-ray photoelectron, X-ray photoelectron spectra},
	isbn = {0032-3896},
	url = {<Go to ISI>://000224367800004},
	author = {Motozaki, W. and Otsuka, T. and Endo, K. and Chong, D. P.}
}
@article {3659,
	title = {Analysis of X-ray photoelectron spectra of eight polymers by deMon density-functional calculations using the model oligomers},
	journal = {Journal of Physical Chemistry},
	volume = {100},
	number = {50},
	year = {1996},
	note = {ISI Document Delivery No.: VX875Times Cited: 29Cited Reference Count: 57},
	month = {Dec},
	pages = {19455-19460},
	type = {Article},
	abstract = {The X-ray photoelectron spectra of eight polymers [(CH2CH2)(n), (CH2CH2NH)(n), (CH2O)(n), (CH2CH2S)(n), (CH(2)CHX)(n), and (CH(2)CX(2))(n) (X = F, Cl)] were analyzed by the deMon density-functional method using the model oligomers. Calculated AIK a valence photoelectron spectra were obtained using Gaussian line shape functions of an approximate Line width (0.10I(k)), where I-k = I-k{\textquoteright} - WD, I-k{\textquoteright} is the vertical ionization potential of each MO, and WD is a shift to account for sample work function, polarization energy, and other effects. The theoretical spectra showed good agreement with the experimental spectra of the polymers between 0 and 40 eV. The core-electron binding energies (CEBEs) of C1s, N1s, O1s, F1s, S2p, and Cl2p of the model oligomers were calculated by unrestricted generalized transition-state models. The difference between the calculated and the experimental CEBEs reflects the trend in WDs of the polymers.},
	keywords = {APPROXIMATION, CORE, ELECTRON BINDING-ENERGIES, LOCAL-DENSITY, MOLECULES, POLY(METHYL METHACRYLATE), POLY(VINYL ALCOHOL), SEMIEMPIRICAL MO, theory, VALENCE ENERGY-LEVELS, XPS SPECTRA},
	isbn = {0022-3654},
	url = {<Go to ISI>://A1996VX87500039},
	author = {Endo, K. and Kaneda, Y. and Okada, H. and Chong, D. P. and Duffy, P.}
}
@article {3697,
	title = {Density functional computations for inner-shell excitation spectroscopy},
	journal = {Chemical Physics Letters},
	volume = {262},
	number = {6},
	year = {1996},
	note = {ISI Document Delivery No.: VV284Times Cited: 28Cited Reference Count: 29},
	month = {Nov},
	pages = {729-732},
	type = {Article},
	abstract = {The 1s {\textendash}> pi* inner-shell excitation spectra of seven molecules have been studied using density functional theory along with the unrestricted generalized transition state (uGTS) approach. The exchange-correlation potential is based on a combined functional of Becke{\textquoteright}s exchange (B88) and Perdew{\textquoteright}s correlation (P86). A scaling procedure based on Clementi and Raimondi{\textquoteright}s rules for atomic screening is applied to the cc-pVTZ basis set of atoms where a partial core-hole is created in the uGTS calculations. The average absolute deviation between our predicted 1s {\textendash}> pi* excitation energies and experimental values is only 0.16 eV. Singlet-tripler splittings of C 1s {\textendash}> pi* transitions of CO, C2H2, C2H4, and C6H6 also agree with experimental observations. The average absolute deviation of our predicted core-electron binding energies and term values is 0.23 and 0.29 eV, respectively.},
	keywords = {APPROXIMATION, ATOMS, CORE, ELECTRON BINDING-ENERGIES, GAS, MODEL, MOLECULES, SPECTRA, VALENCE-SHELL},
	isbn = {0009-2614},
	url = {<Go to ISI>://A1996VV28400009},
	author = {Hu, C. H. and Chong, D. P.}
}
@article {3312,
	title = {SIMULATION OF THE VALENCE X-RAY PHOTOELECTRON-SPECTRA OF 16 POLYMERS BY THE SEMIEMPIRICAL HAM/3 MO METHOD USING THE MODEL MOLECULES},
	journal = {Bulletin of the Chemical Society of Japan},
	volume = {68},
	number = {2},
	year = {1995},
	note = {ISI Document Delivery No.: QP061Times Cited: 17Cited Reference Count: 40},
	month = {Feb},
	pages = {528-538},
	type = {Article},
	abstract = {The HAM/3 method was used to provide a better assignment of the valence X-ray photoelectron spectra of 16 polymers involving nitrogen, oxygen, fluorine, a glucose unit, and a benzene nucleus using the monomer, dimer or trimer model molecules without consideration of the contraction factor of the energy scale. The calculated A1 K alpha photoelectron spectra were obtained using Gaussian functions of a fixed approximate linewidth, 0.10 I-k and I-k=I-k{\textquoteright}-WD, where I-K{\textquoteright} is the vertical ionization potential of each MO and WD is an approximate shift to account for the work function of the sample and other energy (polarization energy and so on) effects. We assumed that WD corresponds to the shift that we must apply before we can compare the calculated spectrum for the single model molecule with the observed spectrum for the solid. The approximate linewidth corresponds to the experimental result that the inner valence spectra are broader. The theoretical spectra showed good agreement with the spectra of the polymers observed between 0-40 eV.},
	keywords = {CO2, CORE, ELECTRONIC-STRUCTURE, ENERGY-LEVELS, ESCA, HAM-3, N2O, POLYOXYMETHYLENE, SPECTROSCOPY, XPS SPECTRA},
	isbn = {0009-2673},
	url = {<Go to ISI>://A1995QP06100014},
	author = {Endo, K. and Inoue, C. and Kaneda, Y. and Aida, M. and Kobayashi, N. and Chong, D. P.}
}
